Concentrating-table.



R. HUNTER.

CONCENTRATING TABLE.

APPLICATION FILED MAYS, 1914.

Patented Aug. 24, 1915.

2 SHEETS-SHEET I- wi/lmeooeo COLUMBIA PLANOGRAPH CD.,WASHINDTON. D. C

R. HUNTER.

CONCENTRATING TABLE. APPLICATION FILED MAY 5, 1914.

1 1 5 1 ,466. Patented Aug. 24, 1915.

2 SHEETS-$HEET 2.

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ROBERT HUNTER, OF SPOKANE, WASHINGTON.

CONCENTBATING-TABLE.

Specification of Letters Patent. Patented A g; 241 1915 Application filed. May 5, 1914. Serial No. 836,52

To all whom it may concern:

Be it known that 1, ROBERT HUNTER, a citizen of the United States, residing at Spokane, in the county of Spokane and State of Washington, have invented new and useful Improvements in. Concentrating- Tables, of which the following is a specification.

This invention is an improved ore concentrating table, the object of the invention being to provide an improved machine of this kind in which the table, when in operation, is given reciprocating movement both longitudinally and transversely thereby greatly facilitating the concentration of the ore particles in the pockets between the ritiies and also facilitating the separation and discharge of the worthless particles.

One object of the invention is to effect improvements in the construction of the concentrating table.

Another object is to provide improved means for reciprocating the concentrating tableboth longitudinally and transversely.

The invention consists in the construction, combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawings: Figure 1 is a plan of an ore concentrating table constructed in accordance with my invention. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a plan of the same with the table removed so as to disclose the construction of the shaking carriages and their operating mechanism. Fig.

4 is a vertical transverse sectional view of.

the same on the plane indicated by the line o of Fig. 2. Fig. 5 is asimilar view on the plane indicated by the line bb of Fig. 2.

The base frame 1 of my improved ore concentrating table is of oblong rectangular form comprising longitudinal side members 2 and transverse end members 3 on the upper sides of the side members and a pair of cross bars l one of which is near one end of the frame the other cross bar being at a suitable distance from the opposite end of the frame. The length of these cross bar's exceeds the width of the frame and the ends of the cross bars project beyond opposite sides of the frame and are provided on their upper sides with supporting guides 5. Each of said guides has a V-shaped groove Gin its upper side, the said groove being arranged transversely with respect to the base'frame.

A lower carriage 7 is provided which is here shown as comprising a pair of transversely arranged end bars Sand a longitudinal bar 9 which connects said end bars. At the ends of the end bars are slides 10 each of which is provided onits lower side with an oppositely beveled guide tongue 11 which operates in one of the guide grooves 6 so that the lower carriage is mounted on the base frame having reciprocating movement transversely of the base frame. Each slide 10 is provided in its upper side with a V- shaped groove l2 which is arranged transversely of said slide and longitudinally with respect to the base frame. An upper carriage 12 is also provided which as here shown is of oblong rectangular form comprising side bars 13, end bars l l and an intermediate cross bar 15. Theside bars are provided on their lower sides at points be understood that since the upper carriage is mounted on the lower transversely movable carriage said upper carriage also moves or is adaptedtomove transversely.

At one end of the base frame 1 is a transverselyarranged bed plate 17 which is bolted on the base frame, is provided with a central opening 18 and is also provided on its ends with a pair of bearings 19. A shaft 20 is mounted in the said bearings and is provided near its center with a pair of cam arms 212'2 these cam arms being arranged at about 90 apart, and being of the shape shown in Fig. 2, ach being rounded on one side as at21 and relatively flattened onythe opposite side as at 21 A crank wheel SZSis here shown at one end of the said shaft to enable the same to be rotated. Any suitable means may be employed for this purpose. p

A pair of yokesT24:25 are respectively operated by the cam arms 2122, each of said yokes having an opening,h ere shown as substantially rectangular in form, in which one of said cam arms operates, the said o ienings being longer in their vertical dimensions than in their transverse dimensions so that the cam arms, while they clear the upper end and lower sides of the yokes' w1ll be oausedto engage the vertical opposite sides thereof and hence'impart reciprocating motion to said yokes. The yoke 24 has oppositely extended guide and supporting arms 26-27 and the yoke 25 has similar arms 2829. The arms of the'yokes are mounted for reciprocating movement in bearing blocks 3031 which are mounted on opposite sides of the bed plate .17. The guide arms of the yokes are rectangular in cross section and the openings in the bearings 3031 engaged by said guide arms are correspondingly shaped so that the yokes while free to reciprocate areprevented from turnr A shaft 32 extends transversely of the base frame at a suitable distance from the bed plate and a pair of rocking arms -3334 are mounted on said shaft. The rocking arm 33 is connected-tothe arm 27 of the yoke 24 by a link 35 and the rocking'arm 34 is connected to the arm 29 of the yoke 25 by a simi lar link 36 Hence the rocking arms are actuated by the yokes and the cam arms as will be understood. i

A bell crank 37 is mounted on a supporting block 38 on one side of the base frame,v

for pivotal or angular movement in a horizontal plane andone arm of the bell crank is pivotally connected as at 39 to the bar 9 of the. lower carriage; The otheri arm of the bell crank is pivotally connected as at 40 to one end of a pitman 41,-the opposite'end of the pitmanbeing pivotally connected as at 42 to a sleeve link 43 which is adjustably mounted on the rock arm 33 and may be s8;- cured to said rock arm at any desired adjustment by means of a set screw 44. similar sleeve link 45 is adjustably secured by a set screw 46 on the rock arm 34. A pitman 47 has oneendpivotally connected to the sleeve link 45 as at 48 and the other end pivotallyconnected as'at 49 to the cross bar 15 of the upper carriage 12. It will be understood from the foregoing that the rock arms and their connections and actuating elements cause the lower carriage to reciprocate transversely and the upper carriage,

. which is carried'by and hence moved transversely with the lower carriage is caused to also reciprocate longitudinally.

The table 50 is provided near its ends, on its under side, with bolsters 5'1 which are provided near their ends with feet'52 that bear on oppositesides of the upper carriage 12 and are provided at their centers with securing" studs 53 which engage openings in the centers of -the end bars 14 of said upper carriage and thereby-the table is detachably mounted on theuppercarriage and when engaged therewithis adapted to. be recipro cated both longitudinally and transversely with the upper carriage.

The tabletop comprises a main or longitudinal plane52'which opens at one end of the tableas at 53 and atransverse plane 54 which is at the opposite end of the table and I inclined transversely thereto and extends down to the adjacent portion of the longitudinal plane 52. The latter plane also in clines laterally toward the corner 55. The

transversely inclined plane 54 is provided. walls '56 5758, the latter being also common to around three of its sides with and forming a side wall of the main plane52 and at the lower side of said main plane.

A wall 59 is also provided for the transverse inclined plane 54 thesaid walllrising from andextending about halfway across the and pockets extending also partly across the main plane 52. On the said plane 52 are a series of longitudinally arranged riflies which are at right angles to the lowermost ril'lle 60 and extend therefrom, the said riffies 62 being of unequal length, theshortest being near thein'ne'r end of the walls 59. Pockets 63 are formed between the progressively lengthened riilles 62. That portion of the main plane 52 which is divided from the plane 54 by the wall 59 is also provided with a series of riffies 64 of unequal lengths, which lengthen progressively as they appreach the side of the said plane opposite the wall 58, pockets 65 being formed between the riflles 64. V

In the'operation of the machine, while the table is being reciprocated longitudinally and transversely, the material to be vconcentrated is supplied to'the. table at the upper end of the transverselyinclinedplane 54. The double reciprocating and jarring movements of the table cause the heavier metalbearing ore particles to settle in the pockets, such particles as are swept over one riifie being caught in a pocket below. The

mass of material is spread or distributed on and passes spirally or in a curved line from the inclined plane 54 down upon the main plane 52 where concentration v is effected the lighter worthless particles passing out- 1 wardly beyond the outer ends ofthe pockets and the heavier metal bearing particles being caught in the pockets between the rifiies, the worthless particles being finally discharged over the open end 53' of the table. When theshaft 20 is turned in the direction indicated by the arrowin Fig; 2,

the evolute rounded edges 21 of thecam arms act progressively and continuously in imparting comparatively easy longitudinal movements to the yokes so that easy sliding cam arms intermittently engage the yokes so that jarring movements are imparted to the latter, and hence jarring longitudinal and transverse reciprocating motions are communicated to the table. The rifiies 60 on the transversely inclined plane 54 are triangular in form transversely so that each of them is provided with an inclined upper side 66 to facilitate the movement of material thereover. Each of the riilles 6264c of the main plane 52 is rectangular in form transversely and has a longitudinally inclined upper surface 67, said rifiles being highest at the end next the inclined plane at and lowest near thedischarge end 53 of the table.

Having thus described my invention, 1 claim 1. In an ore concentrating machine a table having a longitudinal main plane and a transversely inclined plane at one end of and arranged to discharge on to the main plane, said transversely inclined plane having a series of substantially radial riflles and pockets, the latter broadening toward their outer ends and said riftles and pockets extending partially across said inclined plane and the lowermost of said riflles and pockets also extending partially across the main plane and longitudinally arranged series of rililes and pockets on said mainplanek 2. In an ore concentrating machine a table having a longitudinal main plane and a transversely inclined plane at one end of and arranged to discharge on to the main plane, said transversely inclined, plane having a series of substantially radial rifiles and pockets, the latter broadening toward their outer ends and said riffies and pockets extendlng partially across said lnclined plane and the lowermost ofsaid riiiles and pockets also extending partially across the main plane and longitudinally arranged series of rifiles and pockets on said main plane, the said substantially radially arranged ril'lles of the transversely -inclined plane having transversely inclined upper surfaces and the longitudinally arranged rifiies of the main plane having longitudinally inclined upper surfaces extending downwardly toward the discharge end of said main plane, in co1nbination with means to impart longitudinal and transverse reciprocating motions to said table.

3. In an ore concentrating machine a table mounted for reciprocating longitudinal and transverse movement and comprising a longitudinally arranged main plane and a transversely arranged inclined plane at one end of and extending partly across the main plane, said table having a vertical wall separating the major portion of the transversely inclined plane from the main plane, said transversely inclined plane having substantially radially arranged rifiles and pockets closed at the ends next said vertical Wall and open at the opposite ends of and some of said ri'lfies and pockets sweeping around the inner end of said wall, and. said main plane being provided with a longitudinally arranged series of riflles extending from the lowermost of the first-named riflles and a similar series of rii'lles extending from saidtransverse vertical wall, the said riflies of each series on the main plane being progressively lengthened toward the side of said main plane opposite that on which the in Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. O. 

